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Motion computation and visual orientation in flies.
Egelhaaf M, Borst A. Egelhaaf M, et al. Among authors: borst a. Comp Biochem Physiol Comp Physiol. 1993 Apr;104(4):659-73. doi: 10.1016/0300-9629(93)90144-s. Comp Biochem Physiol Comp Physiol. 1993. PMID: 8097978 Review.
In a combination of behavioral, neurophysiological and pharmacological analysis and modelling, the mechanisms are established by which the visual system of the fly extracts three types of-basic retinal motion patterns. 3. Coherent retinal large-filed motion as is induced d …
In a combination of behavioral, neurophysiological and pharmacological analysis and modelling, the mechanisms are established by whic …
Dendritic integration of motion information in visual interneurons of the blowfly.
Haag J, Egelhaaf M, Borst A. Haag J, et al. Among authors: borst a. Neurosci Lett. 1992 Jun 22;140(2):173-6. doi: 10.1016/0304-3940(92)90095-o. Neurosci Lett. 1992. PMID: 1501773
Dendritic integration plays a key role in the way information is processed by nerve cells. The large motion-sensitive interneurons of the fly appear to be most appropriate for an investigation of this process. ...
Dendritic integration plays a key role in the way information is processed by nerve cells. The large motion-sensitive interneurons of …
Photo-ablation of single neurons in the fly visual system reveals neural circuit for the detection of small moving objects.
Warzecha AK, Borst A, Egelhaaf M. Warzecha AK, et al. Among authors: borst a. Neurosci Lett. 1992 Jul 6;141(1):119-22. doi: 10.1016/0304-3940(92)90348-b. Neurosci Lett. 1992. PMID: 1508393
The mechanism that tunes a particular FD-cell, the FD1-cell, to small-field motion is analyzed by injecting individual visual interneurons with a fluorescent dye and ablating them by illumination with a laser beam. ...
The mechanism that tunes a particular FD-cell, the FD1-cell, to small-field motion is analyzed by injecting individual visual interne …
Are there separate ON and OFF channels in fly motion vision?
Egelhaaf M, Borst A. Egelhaaf M, et al. Among authors: borst a. Vis Neurosci. 1992 Feb;8(2):151-64. doi: 10.1017/s0952523800009317. Vis Neurosci. 1992. PMID: 1558827
The motion-dependent response components are inverted in sign when the brightness steps of a stimulus sequence have a different polarity (Fig. 7). (3) The responses to the beginning and the end of a brightness pulse depend on the pulse duration. ...This type …
The motion-dependent response components are inverted in sign when the brightness steps of a stimulus sequence have a differen …
In vivo imaging of calcium accumulation in fly interneurons as elicited by visual motion stimulation.
Borst A, Egelhaaf M. Borst A, et al. Proc Natl Acad Sci U S A. 1992 May 1;89(9):4139-43. doi: 10.1073/pnas.89.9.4139. Proc Natl Acad Sci U S A. 1992. PMID: 1570340 Free PMC article.
The computation of motion plays a central role in visual orientation. The fly has been successfully used as a model system for analyzing the mechanisms underlying motion detection. Thereby, much attention has been paid to a neuronal circuit of individually id …
The computation of motion plays a central role in visual orientation. The fly has been successfully used as a model system for …
Direction selectivity of blowfly motion-sensitive neurons is computed in a two-stage process.
Borst A, Egelhaaf M. Borst A, et al. Proc Natl Acad Sci U S A. 1990 Dec;87(23):9363-7. doi: 10.1073/pnas.87.23.9363. Proc Natl Acad Sci U S A. 1990. PMID: 2251278 Free PMC article.
Modeling of motion-sensitive networks, however, reveals that such elements may still respond to motion in a rather poor directionally selective way. ...Our electrophysiological experiments in the fly visual system suggest that here direction selectivity is acquired in such …
Modeling of motion-sensitive networks, however, reveals that such elements may still respond to motion in a rather poor directionally …
The role of GABA in detecting visual motion.
Egelhaaf M, Borst A, Pilz B. Egelhaaf M, et al. Among authors: borst a. Brain Res. 1990 Feb 12;509(1):156-60. doi: 10.1016/0006-8993(90)90325-6. Brain Res. 1990. PMID: 2306632
A non-linear interaction, such as a multiplication, between neighbouring visual elements was shown to be the core of biological motion detectors in different species ranging from insects to man. ...This makes a reconsideration of the role of inhibition in oth
A non-linear interaction, such as a multiplication, between neighbouring visual elements was shown to be the core of biologica
Principles of visual motion detection.
Borst A, Egelhaaf M. Borst A, et al. Trends Neurosci. 1989 Aug;12(8):297-306. doi: 10.1016/0166-2236(89)90010-6. Trends Neurosci. 1989. PMID: 2475948 Review.
As will be argued here, there is increasing evidence from the different disciplines studying biological motion vision, that, throughout the animal kingdom ranging from invertebrates to vertebrates including man, the mechanisms underlying motion detection can be attributed to only …
As will be argued here, there is increasing evidence from the different disciplines studying biological motion vision, that, throughout the …
Computational structure of a biological motion-detection system as revealed by local detector analysis in the fly's nervous system.
Egelhaaf M, Borst A, Reichardt W. Egelhaaf M, et al. Among authors: borst a. J Opt Soc Am A. 1989 Jul;6(7):1070-87. doi: 10.1364/josaa.6.001070. J Opt Soc Am A. 1989. PMID: 2760723
Three main conclusions were drawn with respect to the movement-detection system of the fly: (1) The essential nonlinear interaction between the two movement-detector input channels can be characterized formally by a mathematically almost perfect multiplication process. (2) …
Three main conclusions were drawn with respect to the movement-detection system of the fly: (1) The essential nonlinear interaction between …
Transient and steady-state response properties of movement detectors.
Egelhaaf M, Borst A. Egelhaaf M, et al. Among authors: borst a. J Opt Soc Am A. 1989 Jan;6(1):116-27. doi: 10.1364/josaa.6.000116. J Opt Soc Am A. 1989. PMID: 2921651
At the onset of stimulus motion, the membrane potential oscillates with a frequency corresponding to the temporal frequency of the stimulus pattern before it settles at its steady-state level. ...To account for the contrast dependence, however, this general scheme has to b …
At the onset of stimulus motion, the membrane potential oscillates with a frequency corresponding to the temporal frequency of the st …
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